Professor Layton and the Diabolical Box
Puzzle 060: Plaza Puzzle
Divide a ring-shaped plaza into two pieces of the same shape using a single line.
- Chapter
- Chapter 4
- Location
- Folsense Station · Rory
- Picarats
- 25 picarats
- Type
- Write Answer
- Region
- Same in all versions
Hint 1: A gentle nudge. Tap to flip.
'The same shape' doesn't have to mean the same size.
Tap to flip backHint 2: The key idea. Unlocks after the previous card is flipped.
A single line doesn't have to be straight.
Tap to flip backHint 3: Almost there. Unlocks after the previous card is flipped.
Draw a circle around the statue, sharing the plaza's centre. Where should it go?
Tap to flip backAnswer: See the answer. Unlocks after the previous card is flipped.
The answer is one circle around the statue, about a third of the way out, splitting the plaza into two similar rings.
Tap to flip backSolution, FAQ and sources
Solution
Draw a single **circle** centred on the statue, between the statue and the outer edge. You get an inner ring and an outer ring.
Two rings are the same shape (one is a scaled-up copy of the other) when the ratio of outer to inner radius is the same for both. If the statue's radius is *a*, the plaza's is *b* and your circle's is *r*, you need *r*/*a* = *b*/*r*, so *r* = √(*ab*). For a plaza whose outer edge is several times the statue's size, that puts the circle roughly a third of the way out from the statue, which is where both sources place it.
About this puzzle
A plaza has a statue in the middle, so the open space is shaped like a doughnut. Divide it into two pieces with the same shape using just one line. Two straight cuts across the ring don’t count, because that’s two lines.
Unofficial fan guide, not affiliated with LEVEL-5 or Nintendo. Puzzle description, hints and solution written by Hint by Hint.
Similar puzzles: Puzzle 059: A Ticket to Where?, Puzzle 064: Stones in a Vase, Puzzle 055: Sammy's Necklace, Puzzle 054: Painting the Flag
All Professor Layton and the Diabolical Box puzzles
FAQ
What is the answer to Puzzle 060, Plaza Puzzle, in Professor Layton and the Diabolical Box?
The answer is one circle around the statue, about a third of the way out, splitting the plaza into two similar rings.
Where do you find Puzzle 060 in Diabolical Box?
Puzzle 060 appears in Chapter 4, in the Folsense Station area, when you talk to Rory.
How many picarats is Diabolical Box Puzzle 060 worth?
25 picarats.
Sources
- Professor Layton Wiki (Fandom): Puzzle:Plaza Puzzle
- StrategyWiki: Professor Layton and the Diabolical Box/Puzzles 51-75
- Professor Layton Wiki (Fandom): Module:PuzzleData/DB
Facts checked on November 14, 2026
Unofficial fan guide. Not affiliated with, endorsed by, or sponsored by LEVEL-5 Inc. Professor Layton, The New World of Steam, and all related names, characters, and trademarks are the property of their respective owners.